The game is pretty simple. You’re a blob, and you go around eating little pellets (“food”) and absorbing blobs smaller than you without getting absorbed by a larger blob.

All the Latest Game Footage and Images from Marble Parkour 2: Roll and Roll Sequel to marble parkour. Roll more and avoid new traps and play different minigames Games metadata is powered by IGDB ...

It's also a proper multi-button game, requiring you to use controls to leap, land, sprint, mantle, and vault. Per the developer there's "no 'hold button to parkour' mentality" at work.